Advice doesn't normally come cheap, but this piece is for free...
通常来说,忠告都是价值不菲的,但这个是免费赠送的。。。
but more often than not, the greater part of the journey is spent on roads with few service stations and too much traffic.
但旅行的大部分时间都花在路上,而且只有很少的服务设施,交通也很拥挤。